Dynamic TextView not updating in fragment

Dynamic TextView not updating in fragment - java

I'm trying to set a TextView that's in a fragment but the text won't update in the view. The text is 1 of 2 pages in a ViewPager. The ViewPager is inside another fragment that has a button which when clicked uses an interface to the MainActivity that calls the changeText() that's inside the fragment with my text.
Fragment Inside ViewPager:
public class PlaceholderFragment extends Fragment {
public TextView textFV;
public PlaceholderFragment() {}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.tab_pull, container, false);
textFV = rootView.findViewById(R.id.textFV);
return rootView;
}
#Override
public void onViewCreated(#NonNull View view, Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
public void changeText() {
textFV.setText("Test"); - Won't update view.
System.out.println(textFV.getText()); - Shows correct text.
}
}
Relevant part of Fragment that contains ViewPager:
OnHeadlineSelectedListener callback;
public void setOnHeadlineSelectedListener(OnHeadlineSelectedListener callback) {
this.callback = callback;
}
public interface OnHeadlineSelectedListener {
void onArticleSelected();
}
//...
#Override
public void onClick (View v) {
callback.onArticleSelected();
}
Relevant MainActivity Part:
public void onArticleSelected() {
PlaceholderFragment articleFrag = (PlaceholderFragment) getSupportFragmentManager().findFragmentById(R.id.viewpager);
if (articleFrag != null) {
articleFrag.changeText();
}
}
Here is the layout that contains the TextView:
<android.support.constraint.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="android.support.design.widget.AppBarLayout$ScrollingViewBehavior">
<LinearLayout
android:id="#+id/tab_1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="10dp">
<LinearLayout
android:id="#+id/containerPull"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:visibility="gone">
<TextView
android:id="#+id/textsLabel"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="#dimen/label_left_margin"
android:layout_marginTop="5dp"
android:text="#string/label_common"
android:textColor="#color/colorLabelText"
android:textSize="18sp" />
<TextView
android:id="#+id/textFV"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Hello, World!"
android:textColor="#android:color/black"
android:textSize="18sp" />
</LinearLayout>
</LinearLayout>
</android.support.v4.widget.NestedScrollView>
</android.support.constraint.ConstraintLayout>
Here's where the button and ViewPager is. The button is the ImageButton:
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.design.widget.AppBarLayout
android:id="#+id/appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#android:color/white">
<android.support.v7.widget.Toolbar
android:id="#+id/pullToolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:title="Information"
app:titleTextAppearance="#style/TextAppearance.Widget.AppCompat.Toolbar.Title.Montserrat">
<ImageButton
android:id="#+id/toolbarButtonPull"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="end"
android:layout_marginEnd="1dp"
android:background="#drawable/button_toolbar_default"
android:contentDescription="Pull"
android:padding="15dp"
android:src="#drawable/ic_arrow_downward_black_24dp" />
</android.support.v7.widget.Toolbar>
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:tabMode="fixed"
app:tabTextAppearance="#style/TextAppearance.Design.Tab.NoCaps">
<android.support.design.widget.TabItem
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Tab1" />
<android.support.design.widget.TabItem
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Tab2" />
</android.support.design.widget.TabLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="#+id/viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="android.support.design.widget.AppBarLayout$ScrollingViewBehavior" />
</android.support.design.widget.CoordinatorLayout>

Looks like your textFV is inside layout that has visibility gone. Can it be the problem?
<LinearLayout
android:id="#+id/containerPull"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
**android:visibility="gone">**
<TextView
android:id="#+id/textsLabel"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="#dimen/label_left_margin"
android:layout_marginTop="5dp"
android:text="#string/label_common"
android:textColor="#color/colorLabelText"
android:textSize="18sp" />
<TextView
android:id="#+id/textFV"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Hello, World!"
android:textColor="#android:color/black"
android:textSize="18sp" />

Related

setOnItemClickListener() not working on ExpandableHeightGridView in Fragment

Hello good morning in my view i cant handled the setOnItemClickListener
I am trying to create an application which dynamically lists installed applications in a gridview.I am able to display the applications in a gridview form but not able to make these items clickable. Nothing happens when i click these items. The code inside the setOnItemClickListener does not get triggered on click event.
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".Tab2profile">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:ignore="UselessParent">
//my scrollview
<ScrollView
android:layout_width="match_parent"
android:fillViewport="true"
android:layout_height="match_parent">
<RelativeLayout
android:id="#+id/MainRLyout"
android:layout_width="match_parent"
android:orientation="vertical"
android:layout_height="wrap_content">
<RelativeLayout
android:id="#+id/girislayout"
android:layout_alignParentTop="true"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="#+id/usernameTv"
android:layout_alignParentStart="true"
android:layout_width="wrap_content"
android:layout_margin="10dp"
android:layout_centerVertical="true"
android:textSize="#dimen/text_size_Orta"
android:textColor="#color/cardview_dark_background"
android:layout_height="wrap_content"
tools:ignore="PrivateResource" />
<Button
android:id="#+id/Login_LogOut_Button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:minHeight="0dp"
android:layout_centerVertical="true"
android:layout_alignParentEnd="true"
android:layout_marginStart="5dp"
android:layout_marginLeft="5dp"
android:layout_marginEnd="5dp"
android:background="#drawable/logout_rounded"
android:drawableRight="#drawable/logout_icon"
android:padding="0dp"
android:text="#string/Logout_Text_str"
android:textColor="#android:color/white"
android:textSize="12sp"
tools:ignore="RelativeOverlap,RtlHardcoded" />
</RelativeLayout>
//in here i cant handled the item click funktşon
<syr13.comapp4.Custum_Adapters.ExpandableHeightGridView
android:id="#+id/Your_Apps_Li"
android:numColumns="3"
android:layout_below="#id/Your_Apps_Tv"
android:horizontalSpacing="6dp"
android:layout_margin="5dp"
android:verticalSpacing="6dp"
android:gravity="center"
android:layout_width="match_parent"
android:layout_height="match_parent">
</syr13.comapp4.Custum_Adapters.ExpandableHeightGridView>
</RelativeLayout>
</ScrollView>
</RelativeLayout>
</FrameLayout>

I think you can Change your Code
from
button.setOnItemClickListener(this);
To
button.setOnClickListener(this);
for example :-
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button button = findViewById(R.id.button);
button.setOnClickListener(this);
}
#Override
public void onClick(View v) {
switch (v.getId())
{
case R.id.button:
//Do Something
break;
}
}
}

how to add bottom layout in Modal BottomSheet Dialog?

I want to achieve the design like this using BottomSheetDialogFragment. But the problem is the bottom layout get scrolled when i drag. I want the bottom layout always in bottom until the BottomSheetDialogFragment gets dismissed.
Please find the screenshot
Here is my code
bottomsheet_layout.xml
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<!--The main content goes over here-->
</LinearLayout>
<!--The footer view-->
<LinearLayout
android:id="#+id/footer_purchase_layout"
android:layout_width="match_parent"
android:layout_height="52dp"
android:layout_gravity="bottom"
android:orientation="horizontal"
android:weightSum="1">
<TextView
android:id="#+id/txt_cancel_purchase"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0.5"
android:gravity="left|center_vertical"
android:text="CLOSE"
android:textSize="14sp" />
<TextView
android:id="#+id/txt_item_purchase_action"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0.5"
android:gravity="right|center_vertical"
android:text="ADD STICKERS"
android:textSize="14sp" />
</LinearLayout>
</FrameLayout>
ModalBottomSheetFragment.java
public class ModalBottomSheetFragment extends BottomSheetDialogFragment {
public ModalBottomSheetFragment() {}
private BottomSheetBehavior.BottomSheetCallback mBottomSheetBehaviorCallback = new BottomSheetBehavior.BottomSheetCallback() {
#Override
public void onStateChanged(#NonNull View bottomSheet, int newState) {
if (newState == BottomSheetBehavior.STATE_HIDDEN) {
dismiss();
}
}
#Override
public void onSlide(#NonNull View bottomSheet, float slideOffset) {}
};
#TargetApi(Build.VERSION_CODES.LOLLIPOP_MR1)
#Override
public void setupDialog(Dialog dialog, int style) {
super.setupDialog(dialog, style);
View mContentView = View.inflate(getContext(), R.layout.bottomsheet_layout, null);
dialog.setContentView(mContentView);
CoordinatorLayout.LayoutParams layoutParams =
(CoordinatorLayout.LayoutParams) ((View) mContentView.getParent()).getLayoutParams();
CoordinatorLayout.Behavior mBehavior = layoutParams.getBehavior();
if (mBehavior != null && mBehavior instanceof BottomSheetBehavior) {
((BottomSheetBehavior) mBehavior).setBottomSheetCallback(mBottomSheetBehaviorCallback);
int height = getScreenHeight(getActivity());
final double desiredHeight = 0.85 * height;
mContentView.getLayoutParams().height = height;
((BottomSheetBehavior) mBehavior).setPeekHeight((int) desiredHeight);
}
}
public static int getScreenHeight(Context ctx) {
DisplayMetrics metrics = ctx.getResources().getDisplayMetrics();
return metrics.heightPixels;
}
}
MainActivity.java
public class MainActivity extends AppCompatActivity {
private Button mShowBottomSheetDialog;
private BottomSheetDialogFragment bottomSheetDialogFragment;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mShowBottomSheetDialog = (Button) findViewById(R.id.showBottomSheet);
mShowBottomSheetDialog.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
bottomSheetDialogFragment = new ModalBottomSheetFragment();
bottomSheetDialogFragment.show(getSupportFragmentManager(), bottomSheetDialogFragment.getTag());
}
});
}
}

use this layout instead of your layout ....
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="10"
android:orientation="vertical">
<!--The main content goes over here-->
</LinearLayout>
</ScrollView>
<!--The footer view-->
<LinearLayout
android:id="#+id/footer_purchase_layout"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:orientation="horizontal"
android:weightSum="1">
<TextView
android:id="#+id/txt_cancel_purchase"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0.5"
android:gravity="left|center_vertical"
android:text="CLOSE"
android:textSize="14sp" />
<TextView
android:id="#+id/txt_item_purchase_action"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0.5"
android:gravity="right|center_vertical"
android:text="ADD STICKERS"
android:textSize="14sp" />
</LinearLayout>
</LinearLayout>
</FrameLayout>
Note:- Weight divide your Layout into different View which is constant in your layout ......

use this layout:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#android:color/white"
android:orientation="vertical">
<androidx.appcompat.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?android:actionBarSize"
app:contentInsetEnd="0dp"
app:contentInsetStart="0dp">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="Title"
android:textSize="18sp" />
</FrameLayout>
</androidx.appcompat.widget.Toolbar>
<androidx.core.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="200dp">
<!--your content here-->
</LinearLayout>
</androidx.core.widget.NestedScrollView>
<FrameLayout
android:id="#+id/bottomView"
android:layout_width="match_parent"
android:layout_height="70dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="Footer"
android:textSize="18sp"/>
</FrameLayout>
</LinearLayout>

Android : Adding space in between tab layout

I am working on an Android project in which I am using TabLayout to show tabs as shown in the image below. As you can see in the screenshot, the tabs are all aligned on the left side. How can I add spaces properly so the three tabs fill out the entire width instead of getting clubbed in on left side. Thank you.
Screenshot :
XML :
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="50dp">
<android.support.design.widget.TabLayout
android:id="#+id/tab_layout"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_marginTop="0dp"
android:background="?attr/colorPrimary"
android:minHeight="?attr/actionBarSize"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
android:fillViewport="false" />
</RelativeLayout>
<EditText
android:id="#+id/emailEditText"
android:layout_width="match_parent"
android:layout_height="45dp"
android:layout_marginTop="60dp"
android:layout_marginLeft="7dp"
android:layout_marginRight="7dp"
android:layout_marginBottom="5dp"
android:alpha="0.4"
android:gravity="center"
android:layout_gravity="center"
android:background="#drawable/layout_bg"
android:ellipsize="end"
android:hint="Search...."
android:textColor="#color/nliveo_black"
android:textColorHint="#color/nliveo_black"
android:inputType="textEmailAddress"
android:maxLines="1"
/>
<ImageView
android:id="#+id/imageView"
android:layout_width="25dp"
android:layout_height="25dp"
android:alpha="0.8"
android:src="#drawable/search"
android:layout_above="#+id/productList"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginLeft="22dp"
android:layout_marginStart="22dp"
android:layout_marginBottom="15dp"
/>
<ImageView
android:id="#+id/cancel"
android:layout_width="25dp"
android:layout_height="25dp"
android:alpha="0.8"
android:src="#drawable/xblack"
android:layout_above="#+id/productList"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:layout_marginRight="22dp"
android:layout_marginBottom="15dp"
/>
<ListView
android:id="#+id/productList"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_below="#+id/emailEditText"
android:layout_marginTop="5dp"
android:layout_above="#+id/relativeLayout3" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:background="#color/common_signin_btn_dark_text_default"
android:orientation="horizontal"
android:id="#+id/relativeLayout3">
<ImageView
android:id="#+id/trashImage"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_centerVertical="true"
android:layout_marginLeft="46dp"
android:layout_marginStart="46dp"
android:src="#drawable/swappossible" />
<ImageView
android:id="#+id/swapImage"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignTop="#+id/trashImage"
android:layout_centerHorizontal="true"
android:src="#drawable/footerheart" />
<ImageView
android:id="#+id/button3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_alignTop="#+id/swapImage"
android:layout_marginBottom="5dp"
android:layout_marginEnd="41dp"
android:layout_marginRight="41dp"
android:src="#drawable/footermessages" />
</RelativeLayout>
</RelativeLayout>
Activity :
public class Products extends Activity{
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.products);
TabLayout tabLayout = (TabLayout) findViewById(R.id.tab_layout);
tabLayout.addTab(tabLayout.newTab().setText("Tinder"));
tabLayout.addTab(tabLayout.newTab().setText("List"));
tabLayout.addTab(tabLayout.newTab().setText("Maps"));
tabLayout.setTabMode(TabLayout.MODE_SCROLLABLE);
tabLayout.setTabGravity(TabLayout.GRAVITY_FILL);
tabLayout.getTabAt(1).select();
tabLayout.setOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
#Override
public void onTabSelected(TabLayout.Tab tab) {
switchIntentsForTabs(tab.getText().toString().toLowerCase());
}
#Override
public void onTabUnselected(TabLayout.Tab tab) {
}
#Override
public void onTabReselected(TabLayout.Tab tab) {
switchIntentsForTabs(tab.getText().toString().toLowerCase());
}
});
}
PageAdapter.java :
public class PageAdapter extends FragmentStatePagerAdapter {
int mNumOfTabs;
public PageAdapter(FragmentManager fm, int NumOfTabs) {
super(fm);
this.mNumOfTabs = NumOfTabs;
}
#Override
public Fragment getItem(int position) {
switch (position) {
case 0:
return new FirstTab();
case 1:
return new SecondTab();
case 2:
return new ThirdTab();
default:
return null;
}
}
#Override
public int getCount() {
return mNumOfTabs;
}
}
FirstTab.java :
public class FirstTab extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
return inflater.inflate(R.layout.tab_fragment_1, container, false);
}
}
tab_fragment_1.xml :
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
// Tried adding layout_marginLeft=150 in TextView below, nothing changed.
<TextView
android:id="#+id/textView"
android:layout_width="100dp"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:textAppearance="?android:attr/textAppearanceLarge"
android:singleLine="true"
/>
</RelativeLayout>
Thank you.

Please remove below line in your activity file
tabLayout.setTabMode(TabLayout.MODE_SCROLLABLE);
tabLayout.setTabGravity(TabLayout.GRAVITY_FILL);
and Change your tablayout
<android.support.design.widget.TabLayout
android:id="#+id/tab_layout"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_marginTop="0dp"
android:background="?attr/colorPrimary"
android:minHeight="?attr/actionBarSize"
app:tabMode="fixed"
app:tabGravity="fill"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
android:fillViewport="false" />

for (int a= 0; a< tabLayout.getTabCount(); a++) {
View tabView = LayoutInflater.from(context)
.inflate(LayoutInflater.from(this), R.layout.item_main_tabview, null, false);
tabView.setLayoutParams(new TableLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));
tabView.setPadding(0, 0, 0, 0);
tabLayout.getTabAt(a).setCustomView(tabViewBinding.getRoot());
}
Thus You can add space between tabs in tablayout

Android Studio Change Fragment on Button Click

Basically I have two fragments with two classes for each and one main class and main activity. I want to set one of the fragment as the home screen and when I press a button it shows the other fragment and hides the previous one.
Problems:
My first problem is that the application is not even opening, its saying,"Unfortunately Application stopped working".
Next, when I click on my button both the fragments are merging and the last fragment is not disappearing.
My main class:
public class MainActivity extends ActionBarActivity {
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
UpcomingProject Upcoming = new UpcomingProject();
fragmentTransaction.replace(android.R.id.content, Upcoming);
fragmentTransaction.commit();
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
#Override
public void onBackPressed() {
}
My Main Activity:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="10dp"
tools:context=".MainActivity">
<fragment
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/upcomingproject"/>
<fragment
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/createproject"/>
</LinearLayout>
My Home page fragment xml:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="10dp"
>
<Button
android:id="#+id/button_create"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="end"
android:text="#string/button_create"
android:layout_margin="15sp"
android:background="#drawable/drawable_buttoncreate"
android:clickable="true" />
</LinearLayout>
My home page fragment java class:
public class UpcomingProject extends Fragment implements View.OnClickListener {
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View rootView;
rootView = inflater.inflate(R.layout.upcomingproject, container, false);
Button CreateP = (Button)rootView.findViewById(R.id.button_create);
CreateP.setOnClickListener(this);
return rootView;
}
#Override
public void onClick(View v) {
CreateProject Create = new CreateProject();
fragmentTransaction.replace(android.R.id.content, Create);
fragmentTransaction.commit();
}
}
My second fragment, the one I want to switch too on the click of a button:
public class CreateProject extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View rootView;
rootView = inflater.inflate(R.layout.createproject, container, false);
return rootView;
}
}
And the second fragment's xml:
<?xml version="1.0" encoding="utf-8"?>
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:android="http://schemas.android.com/apk/res/android">
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:paddingTop="20dp"
android:paddingLeft="20dp"
android:paddingRight="20dp"
android:scrollbarAlwaysDrawVerticalTrack="true">
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:paddingTop="10dp">
<TextView android:id="#+id/name_input"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/name_input"
android:textSize="20sp"/>
<EditText android:id="#+id/edit_message"
android:layout_weight="1"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:hint="#string/edit_message"/>
</LinearLayout>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:paddingTop="10dp"
android:layout_marginBottom="10dp">
<TextView android:id="#+id/contact_input"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/contact_input"
android:layout_gravity="top"
android:textSize="20sp"/>
<EditText android:id="#+id/contact_description"
android:layout_weight="1"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:inputType="number"
android:hint="#string/contact_description"/>
</LinearLayout>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:paddingTop="10dp"
android:layout_marginBottom="10dp">
<TextView android:id="#+id/email_input"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/email_input"
android:layout_gravity="top"
android:textSize="20sp"/>
<EditText android:id="#+id/email_description"
android:layout_weight="1"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:inputType="textEmailAddress"
/>
</LinearLayout>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:paddingTop="10dp"
android:layout_marginBottom="10dp"
>
<TextView android:id="#+id/category_input"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/category_input"
android:layout_gravity="top"
android:textSize="20sp"/>
<RadioGroup
android:id="#+id/radioGroup"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
>
<RadioButton android:id="#+id/radio_individual"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:hint="#string/radio_individual"
/>
<RadioButton android:id="#+id/radio_NPO"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:hint="#string/radio_NPO"
/>
<RadioButton android:id="#+id/radio_NGO"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:hint="#string/radio_NGO"
/>
</RadioGroup>
</LinearLayout>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:paddingTop="10dp"
android:layout_marginBottom="10dp"
>
<TextView android:id="#+id/title_input"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/title_input"
android:layout_gravity="top"
android:textSize="20sp"/>
<EditText android:id="#+id/title_description"
android:layout_weight="1"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:inputType="text" />
</LinearLayout>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:paddingTop="10dp"
android:layout_marginBottom="10dp"
>
<TextView android:id="#+id/description_input"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/description_input"
android:layout_gravity="top"
android:textSize="20sp"/>
<EditText android:id="#+id/edit_description"
android:layout_weight="1"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:hint="#string/edit_description" />
</LinearLayout>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:paddingTop="10dp"
android:gravity="center"
android:layout_marginBottom="10dp">
<Button android:id="#+id/button_register"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/button_register"
android:layout_margin="10sp"
android:background="#drawable/drawable_buttoncreate"/>
<Button android:id="#+id/button_reset"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/button_reset"
android:layout_margin="10sp"
android:background="#drawable/drawable_buttoncreate"/>
</LinearLayout>
</LinearLayout>
</ScrollView>

Try to use getSupportFragmentManager() in your Main Activity to replace first fragment. And getChildFragmentManager() when you replace second fragment

This is a very late reply, but I'll give it in case anyone else hits the same issue.
The reason for this problem was that you have explicitly defined the fragment in your xml file. If you want to swap the fragment it's best to define it as a FrameLayout and then swap it in your onCreate method using e.g.
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
FragmentTransaction fts = getSupportFragmentManager().beginTransaction();
fts.add(R.id.content, UpcomingProject.newInstance());
fts.commit();
setContentView(R.layout.activity_main);
}
This is all explained very well and in much more detail in the link in hrskrs's comment above (https://github.com/codepath/android_guides/wiki/Creating-and-Using-Fragments)

Why the tab widget is above the content in android?

Currently I work on a tabhost layout.
In most android app the layout is:
tab1 | tab 2
____________
Tab 1 content
(if I press on tab1)
However, what I would like to achieve is
Tab 1 content
(if I press on tab1)
____________
tab1 | tab 2
Here is the main xml (backbone of app) :
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<FrameLayout
android:id="#android:id/tabcontent"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_weight="0" />
<FrameLayout
android:id="#+id/realtabcontent"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1" />
<TabWidget
android:id="#android:id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="0"
android:orientation="horizontal" />
</LinearLayout>
The tab content layout
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#31152C"
android:gravity="center"
tools:context=".MonitoringActivity" >
<ScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<ImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:adjustViewBounds="true"
android:src="#drawable/home" />
</LinearLayout>
</ScrollView>
</LinearLayout>
The main class:
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
ctx = this;
gs = (MyApp) getApplication();
tabHost = (FragmentTabHost)findViewById(android.R.id.tabhost);
tabHost.setup(this, getSupportFragmentManager(), R.id.realtabcontent);
tabHost.addTab(tabHost.newTabSpec("main").setIndicator(""),Home.class, null);
tabHost.addTab(tabHost.newTabSpec("carpark").setIndicator("",getResources().getDrawable(R.drawable.btn_park)), CarPark.class,null);
tabHost.addTab(tabHost.newTabSpec("shop").setIndicator("",getResources().getDrawable(R.drawable.btn_shop)), Shop.class,null);
tabHost.getTabWidget().setDividerDrawable(null);
tabHost.setCurrentTab(0);
}
Thanks for helping

you can add tabwidget to the bottom using the given code..
<?xml version="1.0" encoding="utf-8"?>
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#android:id/tabhost"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent" >
<FrameLayout
android:id="#android:id/tabcontent"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="#android:id/tabs" />
<TabWidget
android:id="#android:id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true" />
</RelativeLayout>
</TabHost>

Found out the solution using the support fragment tab host:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<FrameLayout
android:id="#+id/realtabcontent"
android:layout_width="match_parent"
android:layout_height="0dip"
android:layout_weight="1" />
<android.support.v4.app.FragmentTabHost
android:id="#android:id/tabhost"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<TabWidget
android:id="#android:id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" />
</android.support.v4.app.FragmentTabHost>
</LinearLayout>

Try this way,hope this will help you to solve your problem.
activity_main.xml
<android.support.v4.app.FragmentTabHost
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#android:id/tabhost"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<FrameLayout
android:id="#android:id/tabcontent"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_weight="0"/>
<FrameLayout
android:id="#+id/realtabcontent"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"/>
<TabWidget
android:id="#android:id/tabs"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="0"/>
</LinearLayout>
</android.support.v4.app.FragmentTabHost>
tab1_view.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#31152C"
android:gravity="center">
<ScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:gravity="center">
<ImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:adjustViewBounds="true"
android:src="#drawable/ic_launcher" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:textSize="20sp"
android:text="Home"/>
</LinearLayout>
</ScrollView>
</LinearLayout>
tab2_view.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#31152C"
android:gravity="center">
<ScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:gravity="center">
<ImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:adjustViewBounds="true"
android:src="#drawable/ic_launcher" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:textSize="20sp"
android:text="Car Park"/>
</LinearLayout>
</ScrollView>
</LinearLayout>
tab3_view.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#31152C"
android:gravity="center">
<ScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:gravity="center">
<ImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:adjustViewBounds="true"
android:src="#drawable/ic_launcher" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:textSize="20sp"
android:text="Shop"/>
</LinearLayout>
</ScrollView>
</LinearLayout>
MainActivity.java
public class MainActivity extends FragmentActivity {
private FragmentTabHost mTabHost;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mTabHost = (FragmentTabHost)findViewById(android.R.id.tabhost);
mTabHost.setup(this, getSupportFragmentManager(), R.id.realtabcontent);
mTabHost.addTab(mTabHost.newTabSpec("tab1").setIndicator("Tab 1",getResources().getDrawable(R.drawable.ic_launcher)),
Home.class, null);
mTabHost.addTab(mTabHost.newTabSpec("tab2").setIndicator("Tab 2",getResources().getDrawable(R.drawable.ic_launcher)),
CarPark.class, null);
mTabHost.addTab(mTabHost.newTabSpec("tab3").setIndicator("Tab 3", getResources().getDrawable(R.drawable.ic_launcher)),
Shop.class, null);
}
}
Home.java
public class Home extends Fragment{
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {
View V = inflater.inflate(R.layout.tab1_view, container, false);
return V;
}
}
CarPark.java
public class CarPark extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {
View V = inflater.inflate(R.layout.tab2_view, container, false);
return V;
}
}
Shop.java
public class Shop extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {
View V = inflater.inflate(R.layout.tab3_view, container, false);
return V;
}
}

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Dynamic TextView not updating in fragment - java

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